I have no doubt that is exactly what is going to happen. Our governments are drunk with power. It is a recipe for disaster.
Actually our government is extremely weak when it comes to enacting unpopular sweeping long term legislation. It's because the Constitution limits the power of government and requires our public servants face election by the people every 2, 4, or 6 years.
If Obama pardons all the illegals it will be because he knows he can get away with it, but Obama wouldn't want to lose the issue when it is such an effective weapon to bludgeon the GOP as racist with.
Of course I've thought immigration was a loser issue for the GOP since 2006 when the GOP controlled the House and Senate, we passed bills in both, and President Bush promised to sign a bill but nothing happened.
I also believe the words "amnesty" and "deportation" have a different connotation this time around.
I believe Trump has hit his zenith. He already had the most "conservative" position on immigration. He is now, and forever more, a border hawk first. This unenviable position has formerly been held by Tom Tancredo, Alan Keyes, Pat Buchanana, and Chris Simcox. Trump will become tainted by the unsavory characters that border hawks attract...like breitbart.com. GOP candidates who try to tap into Trump's anti-immigration zeitgeist will go down with him.
Up thread you gave a passionate argument why you oppose amnesty, and I don't doubt your sincerity. I'm sure you believe a majority of voters stand by your side.
We will know in a few months if Trump burns like Icarus from dizzying heights. If he does, I submit, his wings started melting today.